Mixing apparatus

A unit volume mixing container for reconstituting a predetermined volume of powdered material and a predetermined volume of additives in a predetermined volume of pressurized fluid to produce a unit volume of reconstituted material, comprising:

• an elongate, generally cylindrical housing having first and second ends and a fluid flow path extending therethrough;
• a first, upstream mixing chamber in the flow path proximate the first end of the housing, said upstream mixing chamber containing said predetermined volume of powdered material;
• a second, downstream mixing chamber in the flow path proximate the second end of the housing, said downstream mixing chamber containing said predetermined volume of additives;
• a filter between said upstream and downstream mixing chambers for maintaining separation o the powered material and additives until the addition of the fluid;
• an influent port in the housing, for directing said pressurized fluid into the upstream mixing chamber, generally along a tangent to the interior wall of the mixing chamber for contacting the powdered material and thereby creating a mixing vortex in the upstream chamber;
• an effluent port in the housing, for directing mixed powdered material and additives in said fluid out of the downstream chamber;
• and
• a receiving receptacle in fluid communication with and downstream form the downstream mixing chamber, said receiving receptacle having a preselected capacity substantially equal to said unit volume of the reconstituted material;
• wherein the mixing of said predetermined volume of fluid, powdered material ad additives produces said unit volume of reconstituted material.